Question

O'Neal works hard．He is often seen _______ heavily before his teammates have even arrived at practice．

A．sweated	B．to be sweated
C．sweating	D．being sweated

 

Answer 1

【答案】

C

【解析】非谓语动词的考查是本题的目的。see somebody doing表示看见某人一直正在干某事，题干中只是将主动变成了被动。